Mill



0 8 m 1 L A T E H RD. N U S A Apr. 10, 1923.

MILL

Filed Oqt. 8, 1920 fisheets-sheet 2 ATTORNEYS.

1,451,280 A. SUNDH ET AL MILL Apr. 10, 1923.

Filed Oct. 8, 1920 5 sheets-sheet 5 ATTO NEY6 Apr; 10', 1923.

A. SUNDH ET AL MILL Filed Oct. 8, 1920 5 sheets-sheet 4 Mk2 mm A m s n wm INVENTORS am/K ATTORNEYJ 25 in one indicating device is driven Patented Apr. 10, 1923.

UNITED. STATES PATENT OFFICE.

YORK, AND WILLIAM WESTER- MAN, OF DETROIT, MICHIGAN.

MILL.

Application filed October 8, 1920. Serial No. 415,513.

To all whom it may concern:

Be it known that we, AUGUST SUNnH, a citizen of the United States, and a resident of Hastings-upon-Hudson, county of Westchester, and State of New York, and WIL- LIAM VVESTERMAN, a citizen of the United States, and a resident of Detroit, county of \Vayne, and State of Michigan, have invented certain newand useful Improvements in Mills, of which the following is a specification.

This invention relates to a device adapted to be applied to mills for indicating the travel of some moving part of the mill, the

18 device being arranged so as also to indicate or register the amount of material passed through the mill. The device is also adapted to be connected to a recording lnstrument in an ofiice, for example, such as of a manager of a plant, whereby the manager from his desk may observe the conditions at the mill.

Anobject of the inventlon is to provide a device of the character deslgnated wheredirectly from the mill itself while the other is controlled electrically by contact mechanism adapted to be actuated by bodily movement of a moving part of the mill to which the 80 device is applied.

In the accompanying drawings wherein we have illustrated an embodiment of our invention and wherein the device has been shown applied to a rolling mill by way of 85 illustration only,

Fig. 1 illustrates in elevation and more 0r less diagrammatically the device of our 1nvention applied to a rolling mill with indicating devices at the mill and in an oflice remote from the mill; r

' Fig. 2 shows in front elevation the ma ch ne at the left of Fig. 1; t

Fig. 3 is an end elevation of the machine of Fig. 2;

Fig. 4 is an enlarged view of the contact mechanism and actuating means therefor employed in our device;

Figs. 5 and 6 are sections taken substantially on the lines 55 and 66 respectively of Fig. 4;

Fig. 7 is an enlarged,'elevat1onal v1ew of the mechanism employed in connection with a clock which is used with the device where it is desired to register conditions at the mill at a remote point;-

ig. 8 is a sectional view taken on the line 88 of Fig. 7;

Fig. 9 shows on an enlarged scale and in sectional elevation a device employed in the present invention whereby a chart is applied showing the amount of material which has passed through the mill at any given instant, this chart arrangement being connected to a time piece;

Fig. 10 is a section taken l010 of Fig. 9; and

Fig. 11 -is a wiring diagram illustrating the circuits for the various electrical devices employed.

Referring now to the drawings in detail and first of all to Fig. 1, A indicates in general a rolling mill with our improved device applied thereto while B designates the indicating devices connected with a time piece and which devices are adapted to register conditions at the mill A at a remote point.

Referring to the other figures in detail, 1 and 2 designate respectively the upper and lower rolls of a rolling mill to which our device is applied, these rolls being applied for rotation in frames 3 and 4. The rolls 1 and 2 may be driven in any suitable manner. 5 designates a roll of metal which is to be passed between the rolls 1 and 2 of the rolling mill A, this metal being supported on suitable brackets (isecured to the frame of p on the line th machine or any other convenient location.

The upper roll 1 of the rolling mill is adjustable by means of screws 7 in the usual manner. The roll 2 of the mill is provided with a shaft 8 carrying a bevelled gear 9, the latter being in constant mesh with a corresponding gear 10 mounted upon the en of a vertically extending shaft 11 guided by a bracket 12, the latter being secured to the side frame 4 of the machine. The shaft 11 is secured to a vertically extending stub shaft 13, the latter carrying at its upper end a bevelled gear 14. This gear is contained within a suitable ;casing 15 which is secured to the side frame 4 of the machine in any suitable manner, this casing being entirely enclosed, preferably, with the exception of the spaces which are provided for the indicating elements 16 and 17. The

ferred to.

i 10, 14,18 and the clutch 22. 45 designated as a whole B (see Fig. 1) are of a shaft 25 having a bearing at 26 .in the casing 15, the shaft 25 constituting an operating shaft for the indicating element 16. The element 16, it may here be mentioned, is provided roll 2. The shaft 25 carries adjacent its inner end a commutator or circuit controlling device 27 cooperating with contacts 28 and 29 as will hereinafter be more fully pointed out.

The clutch 22 already referred to, comprises the member 21 carried by the stub shaft 19 and a member 30 carried by a shaft- 31 which when rotated causes the indicating element 17 to function, the member having a sliding movement longitudinally of said shaft. This sliding motion is imparted to the member 30 by energization of a winding 32 with which the clutch is provid- 30 ed, the control for this winding being described in detail hereinafter. The shaft 31 also carries collector rings 33 and 34 cooperating with contacts 35 and 36. A commutator 37 is also mounted upon this shaft, this 35 commutator cooperating with contacts 38 and 39.

From the description thus far given it will be seen that the indicating element 16 is capable of being driven directly from the 40 roll 2 of the mill A ,through the gear train comprising the gears 8, 10, 14, 18, 23 and 24 while the indicating element 17 is driven through the gear train comprising gears 9, The indicators shown in detail in Figs. 7 and 8 and-will now be described.

The upper indicating element is designated 40 and the lower indicating element is 50 designated 41, these two elements corresponding to the indicating elements 16 and 17 respectively, that is to say, the reading of the indicating element 40 is the same as that of the indicating element 16 while the read- 55 ing of the indicating element 41 is the same as that of the indicating element 17. The

indicating element 40 is driven or actuated by an electro-magnet designated 42 (see Fig. 8.), the circuit of this magnet being controlled in a manner hereinafter to be pointed out in detail. This magnet is provided with a core 43 secured to a lever 44 mounted upon a shaft 45 extending longitudinally of the indicating element 40, the member 44 65 being provided with a pawl 46 cooperating f r the purpose of registering or 15 indicating the peripheral travel of' the mill with a ratchet-wheel 47 which constitutes the operating or actuating means for the indicator.

It will be seen that as the magnet 42 is energized and draws in its core 43 the ratchet-wheel 47 will be given a partial rotation in an anti-clockwise direction as viewed in Fig. 8. l u

The operating mechanism for the indicating device 41 comprises a magnet 48 provided with a core 49 connected to an 'arm 50 extending longitudinally of the indicating element, the arm 50 carrying or having connected to it a pawl 51 cooperating with a ratchet-wheel 52 constituting the operating or actuating mechanism for the indicating element. The operation of this arrangement is obvious, the energization of the magnet 48 causing the core 49 to be drawn inwardly whereby the pawl 51 will cause a partial rotation of the ratchet-wheel 52 in an anti-clockwise direction. All of this mechanism ust described, is mounted within a casing 53 provided, of course, with openings 54 and 55 for reading the indicator. The casing 53 has mounted therein and secured thereto in any suitable manner a time piece 56, the main shaft 57 of which is screwthreaded to receive a travelling nut 58 guided by rods 59 and 60 so that when the shaft 57 is rotating the nut 58 is compelled to travel longitudinallyof the shaft. The time piece also has secured to the shaft 57 a drum 61 carrying a chart 62. A stylus 63 carried on an arm 64 secured to the nut 58 and actuated by an electro-magnet 65 is provided forthe purpose of plotting a curve on the chart 62 to show the output of the mill at any desired period of time or at any instant of time. The nut 58, it will be observed from Fig. 10, comprises two members 66 and 67, the member 67 being pivoted on 66 at 68. This construction is provided so that the stylus may be reset after the nut 58 has moved to the limit of its travel to the right as viewed in Fig. 9. Current for the magnets 42, 48 and 65 and for the winding 32 of the clutch 22 is supplied from a battery 69 or other suitable source of power supply. A switch and controlling mechanism therefore is shown at the left of Fig. 4 and comprises a plunger 70 adapted to be reciprocated in a cylinder 71, the plunger rest ing upon the top of the upper roll 1 ofthe mill and being maintained in engagement therewith by a coil spring 72 within the casing 71 just mentioned. 'A short rod 73 is carried by the upper end of this plunger, this rod engaging one arm of a bell crank lever 74 mounted within a casing 75 immediately above the casing 71. The arm of .this bell crank lever is maintained inconstant engagement with the upper end of the rod 73 by a small spring 76. Connected to this bell crank lever 74 is a system of levers 77, 78 and 79, the lever 79 constituting a movable contact, this lever being pivoted at 80 and movable about saidpivot into engagement with a fixed contact 81.

- It will be seen from Fig. 4 that when the mill A is idling the contact 79fwill be without engagement with the fixed contact 81 but as soon as a strip is fed to the mill, the roll 1 will be raised slightly carrying the plunger 70 upwardly which, through the system of levers just described, will cause the contact 79. to engage the contact 81.

Assuming now that the mill A is running idly, the shaft 11 will be driven due to rotation of the shaft 8, or roll 2 of the mill imparting rotation to the shaft of the indicating element 16 through the gears 8.

10, 14. 18, 23 and 24. This rotation of the shaft 25 will cause the indicating element to function and to register the peripheral travel of the mill roll 2. At this time. however, by reason of the fact that the winding 32 of the clutch 22 is not energized, the indicating element 17 will not be functioning. The rotation of the shaft 25 also imparts rotation to the commutator 27 carried thereby to make and break a circuit at the contacts 28 and 29.

From Fig. 11 which is a complete wiring diagram of the electrical system of our device, it will be seen that a circuit to the magnet 42 controlling the operation of the indicator 40 of Fig. 7 will be made and broken uniformly by reason of the fact that the commutator 27 is provided with regularly spaced insulation blocks 82. The circuit for the magnet 42 may be traced as follows:

From the battery 69 by way of conductor 83, contact 28, commutator 27, contact- 29, conductor 84. winding of the magnet 42, conductors 85. 86 and 87 to the other terminal of the battery.

The magnet 42 now being energized will draw in its core 43 to impart an impulse through its connection with the pawl 46 to the ratchet-wheel 47 to actuate the indicator By reason of the fact that the commutator 27 is rotating the circuitjust traced will beregularly made and broken so that the magnet '42 will be energized and deenergized in regular order to impart a series mill, this of to be raised slightly to cause the contactof impulses to the ratchet-wheel 47. The commutator-27, the pawl 46 and ratchetwheel 47 are sodesigned with relation to the indicating element 16 that-the two indicators 16 and 40 will always register the same. This action will continue while the mill is running without regard to whether or not a strip 5 is passing therethrough.

If a strip 5 of metal be fed to the rolling willcause the upper roll 1 there- 79 to engage the stationary contact 81.

This closes a circuit to the winding 32 of the clutch 22. This circuit may be traced from one terminal of the battery 69, conductor 88, contacts 81 and 79, conductor 89, contact 35. collector ring 33, winding 32, collector ring 34. contact 36, conductors 90 and 87 to the other terminal of the battery. The winding 32 of the magnetic clutch now being energized. the member 30 thereof will move longitudinally of the shaft 31 into engagement with the member 21 of the clutch and the indicating device 17 will now be driven by way of the gears 9, 10, 14, 18 and clutch 22. The shaft 31 now rotating will drive the commutator 37 and this commutator will make and break in regular order a circuit to the windings of the magnet 48. This circuit may be traced as follows:

From one terminal of the battery 69 by way of conductor 88. contacts 81 and 79. conductors 89 and 91. contact 39. commutator 37. contact 38. conductor 92. winding of the magnet 48. conductors 93. 94. 86. and 87 to the other terminal of the battery. The winding of the magnet 48 being energized will cause the magnet to actuate its core 49 to in turn impart a partial rotation to the ratchet-wheel 52 of the indicating device 41 and by reason of the insulation segments 95 with which the commutator 37 is provided. the circuit of the winding of the magnet. 48 will be made and broken at regular intervals to cause the ratchet-wheel 52 to be rotated to actuate the indicating device 41. The commutator 37 is so proportioned relatively to the speed at which the indicator 17 is driven as to cause the indicating devices 41 and 17 to register the same at all times. At this time, regardless of whether or not there be a load on the mill. the time piece 56 is functioning to cause the drum 61 to be driven thereby and the nut 58 to be carried rear\\"ardly, relatively to the shaft 57 of Fig. 9. If noload be on the mill at this time the stylus 63 will not be functioning. Assuming, however, that a load is on the mill, that is to say, assuming that a strip 5 is passing through the mill, the contacts 81 and 79 will be closed as already pointed out and a circuit may therefore be traced to the. winding of the magnet 65 as follows:

From one terminal of the battery 69 by way of conductor 88, contacts 81 and 79, conductors 89, 91 and 96, winding of the magnet 65, conductors 97, 94, 86 and 87 to the other terminal of thebattery.

The winding of the magnet 65 being energized will draw the stylus 63 into engagement with the chart 62 which at this time is rotating. being driven by the time piece 56, and inasmuch as the nut 58 is travelling rearwardly and the chart 62 is being rotated, the stylus 63 will plot or draw a curve on the chart, the length of which will depend upon the length of time it takes for the strip 5 to pass through the mill.

It will be seen from the foregoing that we have provided indicating devices capable of being used with a mill to register or indicate the travel of a moving part of the mill and also a device whereby the amount of material passed through the mill may be registered. Both of these factors are visible at the mill itself and also at a remote point, such as the oflice of the manager or superintendent of a plant.

It will be seen also that we have provided means whereby a permanent record may be obtained of the operation of the mill, this means being comprised by the chart 62 and the stylus 63. the operation of which have already been fully described.

It will be seen also that we have provided indicating devices of the character just referred to wherein the indicating device or devices registering the travel of a moving part. of the mill is driven from the mill itself, that is to say, one indicating device, the one at the mill, is driven directly from the mill roll while the corresponding indicating element is driven electrically, the electrical drive of the last indicating element being controlled by the mill.

It will be-further observed that the indicating elements by which the amount ofmaterial passed through the mill is registered is driven from the mill through the medium of an electric clutch, the energization of which is controlled by one of the mill rolls while the corresponding indicating element remote from the mill is controlled by its corresponding indicator.

While we have illustrated herein and described an embodiment of our invention, it is to be understood that we are not to be limited to the details of construction so illustrated and described but that obviously changes may be made therein within the purview of this invention.

What isclaimed is':

1. In combination, an indicating device for indicating the travel of a moving part of a mill, an indicating device for indicating the amount of material passed through said mill, said last-named indicating device being provided with an electric clutch adapted to be energized by closing of a circuit due to movement of a part of a mill when the material is passed into said mill.

2. In combination, a rolling mill, anindicating device mechanically driven by one of the rolls of said mill for indicating the travel of said roll, and indicating device for indicating the amount of material passed between the rolls of said mill and contact mechanism .for controlling said secondnamed'indicating device adapted to be actuated' by bodily movement of a roll of the when material is 'fed to the same mill when material is passed into said mill 3. In combination, a rolling mill, an indicating device mechanically connected to a roll thereof for indicating the travel of said roll, an indicating element for indicating the amount of material passed through said mill, clutch mechanism for clutching said lastrnamed indicator to the driving means for the first-named indicator and contact mechanism controlled by a roll of the rolling mill for closing a circuit to said clutch mechanism to cause the same tolfunction when material is fed into the m1 4. In combination, a rolling mill, an indicator for indicating the amount of material passed through said mill, an electrically operated clutch for clutching said indicator to said mill, and contact mechanism actuated by bodily movement of a roll of said mill for closing a circuit to said clutch mechanism to cause the latter to actuate and clutch the indicator to the mill to be driven thereby.

5. In combination, a rolling mill, an indicator for indicating the amount of mate rial passed through said mill, a slidable element maintained in engagement with a roll of said mill, contact mechanism controlled by said slidable element, and an electrically operated clutch the circuit of which is controlled by said contact mechanism, for clutching said indicator to the mill to cause the same to be driven to indicate the amount of material passed through the mill.

6. In combination, a rolling mill, an indicator for indicating the amount of material passed through said mill, a slidable element in engagement with a roll of said mill and actuated by bodily movement of said roll, a lever actuated by said slidable element, contact mechanism carried thereby, and an electrically operated clutch, the circuit of which is controlled by said contact mechanism for clutching said indicator to the mill.

7. In combination, a rolling mill, an indicator for indicating the travel of a moving part of said mill, a gear-train between said indicator and said mill whereby the indicator is driven directly by the mill, a contact mechanism connected to said indicator and driven by said mill, a'n electro-magnet, the circuit of which is controlled by said contact mechanism and a second indicator remote from the mill-and actuated by said electro-magnet.

is controlled by said contact mechanism, and an indicator remote from the mill for indicating the amount of material passed 1 through said mill, Which last-named indicafor actuating the last-named indicator, the 1 tor is actuated by said electro-magnet. circuit of said electro-magnet being con- 9. In combination, a mill, an indicator, trolled by said contact mechanism. an electric clutch for connecting said indi- This specification signed this 23rd day of 5 cator to said mill, contact mechanism driven Sept, 1920.

by said mill when the electric clutch is in AUGUST SUNDH.

n signed this 27 day of operation, a second-indicating element for This specificatio indicating the amount of material passed Sept, 1920. through said mill, and an electro-magnet WM WESTERMAN. 

